Android :: Order Of Statements In OnDestroy() Method

Feb 3, 2010

If I override my main Activity's onDestroy() method in order to recycle a bitmap when the screen is rotated, should I call super.onDestroy() before or after myBitmap.recycle()? Does it matter?

Android :: Order of statements in onDestroy() method


Android :: Activity Execute OnDestroy() / OnCreate() Method When Push On Keyboard

May 2, 2009

I use sdk 1.5 version and same to my handphone, my handphone is use G1. Now i test my application on my handphone. When i push on keyboard, i found system will destroy current activity(execute onDestroy() method) and execute onCreate() method again. So i will all current status and all datas. I don't wish this happen, how to block system execute onDestroy() and onCreate() when i open and close keyboard?

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Android :: How To Get Debugging Statements In Eclipse

Apr 20, 2010

I've read the lame documentation, and checked other answers.I'd like my Android app to print some debug statements in the logcat window of Eclispe. If I use the isLoggable method on the various types of debug levels on the Log class, I find that WARN and INFO are returning true and Log.i do not produce any output.Does anyone know which gotchas I've missed?And just to vent, why should this be hard? I've published apps for iphone and bberry and while appreciate the use of java, the platform is reeking of too many "genuiuses" being involved. I suppose Activities and Intents are very flexible, but why? I just want to put up some screens, take some input and show some results. The bberry pushscreen and popscreen is a lot less pretentious.

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Android : How To Dump A Sqlite Statements Text File Into Db?

Nov 5, 2010

I am preparing a new update of my application, in this version I need to insert lot of new rows (200) in my db.

Because I don't want to programatically add 200 insert code line for each row, I would like to know what is the best method to accomplish it just with a call to the file and dumping it into my db.

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How To Generate And Use Variables In Different Switch Statements

Jan 29, 2012

I'm trying to encrypt a text with DES algorithm using Bouncy Castle library. I have written the following code:

Code:

try{
KeyGenerator kg=KeyGenerator.getInstance("DES");
SecretKey key=kg.generateKey();

[Code]....

Then depending on the user selection, inputText is encrypted or encText is decrypted in the switch statement. Both encryption and decryption blocks share the same "keySpec" and "Cipher" variables generated in the above code snippet. However, the compiler says that keySpec and Cipher cannot be resolved which I understand is that the keySpec and Cipher generated cannot be seen by the statements inside the switch blocks. How can I make it work?

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Android :: How To Fix Runtimeexception:android.database.sqlite.SQLiteException: Unable To Close Due To Unfinalised Statements

Jul 6, 2010

The log is as following:

CODE:..................

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HTC EVO 4G :: EVO Under Sprint Family Plan - Call And Internet History Online And In Statements

Jul 16, 2010

Is there any way to secure call history for one of the phones in family plan, or will the primary account allways have access to every call any phone makes via the statements or online access?

Also, How much browser and download history information is available in statements and online for all phones on the family plan?

So is anybody doing seamless VIOP from the EVO on 3g? If so how? will VOIP calls show up in any logs outside the phone?

Any ETA on when it will get Skype without some third party? How about true multitasking while on Sprint Voice Call? I honestly can't believe it does not offer those two, I'm sure millions will jump when those come in.

BTW, I tested tethering with PDANet on 3g last night .. It worked great - not crazy fast, but good enough in a pinch.

I'm still waiting for 4g in the big city I live in.

For me, these are the monster items I've been waiting for.. Fast tethering, Voip Video and voice client , multitasking with voice.

One cool feature I will use tons is Voice command and Voice Typing.. they work awsome.

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Android :: Releasing Resources In OnDestroy

Aug 20, 2010

I understand that the system may kill the activity without calling onDestroy(). Say I have a MediaPlayer that runs even when it's not visible, I would be releasing the player in onDestroy() method.Now, if the system decides to kill the activity after calling onPause() and never called onDestroy(), what does it mean for my MediaPlayer? Is it ever released? This is bigger problem for Camera since I think it requires to be released for other activities to use it.

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Android :: Service.onDestroy() Invalid?

Sep 30, 2009

I use AlarmManager to restart my service, code is:

CODE:........................

After 5 seconds, BootCompleteReceiver will startServcie(), but only see onStart() not onCreate() calls.

Is the way of destroying the service wrong? BootCompleteReceiver is written in AndroidManifest.xml

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Android :: Testing Low Memory And OnDestroy

Jun 21, 2010

Testing onDestroy.

Q: does using a lot of RAM in one application always lead to onDestroy being called on Activities in other applications?

To try and figure this out I created two separately installed applications. The first just logs its lifecycle transitions and the second allocates a chunk of memory each time you press a button.

What I saw was the second application eventually suffered a fatal Out Of Memory Error force close. The onDestroy method was not called on the first logging application and when I switched back to it onResume was called.

My conclusion is that using a lot of memory in a single application will lead to a fatal Out Of Memory Error without onDestroy first being called on Activities in other applications. The documentation left me expecting an onDestroy on the logging application since the foreground application was trying to allocate more memory.

Does the above sound right? What's a good way to test the onCreate/ onDestroy lifecycle methods as they relate to low memory?

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Android :: OnRestart() Being Called After OnDestroy()

Jul 21, 2009

Every once in a while my activity gets restarted after it's destroyed instead of being created again. I.e. I see:

CODE:..........

instead of:

CODE:............

Looking back in my log I can see this happening periodically, but no apparent pattern to it. This certainly isn't in the state diagram, and needless to say this doesn't make for a happy app.

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Android :: Method OnBackPressed() Of Type FirstGroup Must Override Superclass Method

Sep 7, 2010

I'm trying to override the onBackPressed() method of the ActivityGroup class:

public class MyClass extends ActivityGroup {

@Override
public void onBackPressed() {
// do something
return;
}

but I'm getting the error The method onBackPressed() of type MyClass must override a superclass method. I'm relatively new to Java, I've seen here that people do it and it works for them Why I'm getting this error? I'm writing an app for android 1.5, could the problem be here?

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Android :: Show Method Definition - Eclipse Recognizes Warning On Method

Nov 22, 2010

In Eclipse, when I mouse hover over a built-in method, it displays a method definition including stuff like what the method does, input objects, return objects etc. If I have a yellow line (warning) under the method I'm trying to use, I can't get the mouse-over to show the definition. If I try hitting F3, I get a "The Jar of this class file belongs to container "Android 1.6" How do I show the definition of the method I am using when there is a warning?

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Android :: OnStop OnDestroy Called From Back Key Or Not ?

Sep 17, 2009

Each time I switch the orientation of the device, onStop() and onDestroy() are called. They are also called when I close the Avtivity (dismiss()), and when I press 'back' key. In onStop() or onDestroy() methods : how can I know how I can here ? I'd like to run some code when I close the Activity (back button), but not if I change screen orientation

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Android :: Content Provider OnCreate OnDestroy

Jun 30, 2010

when writing a ContentProvider I have to implement the onCreate()-method, in which I establish my database connection. But to write the changes I made to the database I have to close the database on some point. Does something like a onDestroy()-method exist for ContentProviders or is there some intent I have to listen to, which is fired before killing my process?

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Android :: Hide Activity On BACK Key Without OnDestroy?

Oct 28, 2009

When user presses BACK key, my activity's onDestroy is called and then it is killed. Is there a way (by overridding Activity.onKeyDown??) to simply put the activity into background without killing it? I want the BACK key to act like the HOME key (which doesn't kill my app), except I want to show the activity immediately below my activity.

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Android :: OnDestroy Not Called After Adding Texttospeech

Apr 13, 2010

I added TextToSpeech to my app, following the guidelines in the following post:

http://android-developers.blogspot.com/2009/09/introduction-to-text-to-speech-in.html

and now my onDestroy is no longer called when the back button is pressed.
I filed a bug report regarding this: http://code.google.com/p/android/issues/detail?id=7674

Figured i should also ask here if someone else has seen this, and found a solution?

It seems that it is the intent that causes the problem, i.e. the following:

CODE:................

If I skip this intent, and just go ahead and create a tts-instance, it works fine.
Any clues to what is wrong with this intent?

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Android :: Service Dies Without Calling OnDestroy

Dec 15, 2009

A service is setup by an activity with startService(service_intent). This service is meant to run 24 hours a day. After some amount of time, 5 or 6 hours sometimes but its not predictable, the service is killed.In the database log, the destroyed message does not show up and the notification #1 is not cancelled. Android makes no attempt to restart the service. The database log will show the startup of the replacement service if I trigger it by visiting the activity. What can I do to keep this service running or at least get it restarted by android automatically?

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Android : Listener - Back Button - And OnDestroy

Mar 13, 2010

I have an application with a single Activity implemented as a singleton (in the AndroidManifest). It implements a Listener I wrote. When the application is first run the Listener works fine. When I use the "home" button to minimize it, then open it again it's still fine.

But when I press the back button then run it again from the application icon, the Listener doesn't work fully. The code runs and the Listening methods are called as usual but none of the UI elements that are listening update. It requires a restart of the phone to get the listener working again after this point.

I know the "back" button doesn't really close the application, per se. But resetting the phone sure does! Is there a way to use the onDestroy() or similar method to call a function that actually closes the application? I'm asking because restarting the phone is the only way to get the listener back so I was hoping I could do that programmatic ally.

For example, my progress bar is a member variable of my Activity, but onCreate() I do "progressBar = (ProgressBar) findViewById(R.id.progress_bar);" Is this perhaps creating a separate instance of it or something?

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Android :: OnActivityResult No Longer Being Called After OnDestroy

Jul 3, 2010

OnActivityResult is giving me major headaches. My little game has a title / menu screen. Upon clicking "new game" an Activity is launched which creates a SurfaceView for my game world.

When playing, the player can enter buildings in the game world. Upon entering a building I launch the activity for that particular building from my SurfaveView.

Here is an example:

CODE:............

mMap is the SurfaceView. I'm passing a bundle containing the state of the player. In onActivityResult I grab the bundle returned by the store activity and update the player state.

CODE:................

mSavedPlayer is later used to set the new player state.

All the above works generally

I can enter stores, buy stuff, leave and the player is updated correctly.

The problem manifests when I press the Home button (or someyimes back button) and onDestroy gets called. My onDestroy method does nothing besides call super.onDestroy();

After onDestroy() gets called onActivityResult no longer gets called.

So:

1) I play the game, everthing works great.

2) I press home and ondestroy is called

3) relaunch my game via launcher icon

4) Resume game. I can still enter and leave stores but onActivityResult is no longer called.

Here is some logcat output. I'm logging each time I enter a relevant method.

CODE:................................

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Android :: Activity Being Killed - OnDestroy - On Orientation Change

Apr 5, 2010

I am working on a MVC implementation for Android (to be subsequently hosted on SF and/or GC).

It works like this:

Activity (View) <=> Application (Controller) <=> Data (Model) <=> Persistence (DB/Network etc)

The scenario is:

1. Activity launch (main/launcher)

2. Notifies Application about performing a data transaction

3. Upon receipt of data response, controller devices which Activity to launch (or update existing)

4. Application has overridden the method onConfigurationChange

Problem: When the orientation is changed, the Application is notified about onConfigurationChange but:

a) The "current" activity is Destroyed and recreated -- which is fine to some extent b) The new instance which is created is automatically => onCreate, onPause, onStop, onDestroy.... now that's catastrophic.

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Android :: Two OnCreate (and OnDestroy) Invocations On Orientation Chage

Jan 4, 2010

With following simple code (on clean, new android project):

CODE:..............................

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Android :: Why Does App Not Get OnDestroy When Exited But Then Receives An OnCreate When Relaunched

Sep 11, 2009

Why does app not get onDestroy when exited but then receives an onCreate when relaunched?

Here is the trace. Launched app

It received onCreate and the other expected on calls for a launch. Now, leave application with the home button and it receives onSaveInstanceState onPause onStop

And returns to the main Android screen (the one with Google Search at the top) Launch the app again and it receives onCreate onStart onResume

The docs say onCreate is Called when the activity is first created. But here it is never destroyed but created again. There are many objects that never got GCed because the app was not onDestroyed?

Is this a memory leak? What have I missed? Or should I assume that onCreate can be recalled for an already created app.

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Android Fragment OnDestroy Called Twice During Orientation Change?

Jan 19, 2014

why onDestroy is being logged twice for the fragment class in the the following code when the orientation of the device changes. Its logged once for the activity class, but twice for the fragment.

Code:
public class ExampleActivity extends Activity {

protected String LOG_TAG = ExampleActivity.class.getSimpleName();

private FrameLayout mFragmentHolder;[code].....

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Android :: Method.getAnnotation( ) Or Method.isAnnotationPresent( ) Not Working

May 12, 2010

I am trying to use annotation - method.getAnnotation( ) or method.isAnnotationPresent( ) and it is not working. I am using eclipse emulator for 2.1 OS version with JDK 1.6. Following is information about what I did..................

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Android :: OnStop And OnDestroy Aren`t Invoked After Calling Finish()

Oct 14, 2010

i`ve got some problems with finish() method. I expect what after calling on my Activity finish() method onStop and onDestroy must be triggered(or am wrong??), in majority of examples they are, but Scenario: - reboot phone - launch activity - invoke finish() onPause is triggered but afterwards they are no calls to onStop() and onDestroy()I`ve noticed, that those calls are triggered after launching any other activity.

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Android :: How To Save Value OnDestroy Or OnStop / Program Launches Back Again?

May 6, 2010

I wonder if I could save a value (in my program its an index) so I could call it back when the program launches back again (even if the program destroyed) and the user could start from where finish.

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Android :: Implementation Of OnDestroy For Service Containing Worker Or Backround Thread

May 26, 2009

I'm implementing a service that contains a thread to handle all time consuming operation. My core service logic is in a different thread than the ui or main thread. According to the Android document, when the OS plans to free some system resource, it will call onDestroy () on the service and only when onDestroy() returns it will kill the process hosting the service, thus giving opportunity to the service to cleanup.Now, when onDestroy() is called, I want to send a message to my service thread to do the necessary cleanup. Only when the service thread acknowledges that the cleanup or shutdown is complete, onDestroy () should return. I could find a way to send asynchronous messages to threads and the corresponding processing of the messages, but not able to figure out how I need to implement onDestroy(), such that it would send a message to the service thread and should wait for a result, before returning.

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Will OnStop And OnDestroy Always Get Called

Sep 28, 2012

There are some process manage application that allows user stop any running aplication by a button pressing. I want to know, in these situations, the onStop and onDestroy methods will always get executed?

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Android :: Switch Statements In Android

Oct 13, 2010

the idea is that once if/else determines that the onTouch event was caused by clash and the switch statement then determines what to do based on the action. i don't know if the problem is that the switch statements are not returning true and that may be related to the problem. when i add a return, eclipse says that the code is unreachable which i don't understand. i was under the impression that you can't break out of a switch without break. what's actually happening is that the first sound will loop but the code never seems to detect the action up when the button is released and so the sound plays forever.

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